http://www.moneysavingexpert.com/family/make-money
Sorry you have to scroll down a bit to find the article 
This is for "employees" only.
Laundry costs can be claimed for by self employed or by the business...whichever 
Usually your posts are very informative and helpful. This one doesn't fit that criteria though. Next you'll tell us its just for laundry !! Havn't been drinking with Kate have you?!!!!
Copied from the link......
Tax rebate for uniform wearers
Employees who wear a uniform – whether a simple polo shirt with a logo or full attire eg, nurses – who wash, repair or replace it may be able to reclaim tax of £12 to £56 PER YEAR.
You can claim back a rebate for up to the past six years - plus the current year - and once you're registered it applies for the future too.
To be able to claim tax relief, ALL of the following must apply:
You wear a recognisable uniform that shows you've got a certain job, like a branded t-shirt or police uniform. Ordinary clothes, even only worn for work, don't count.
Your employer requires you to wear it while you're working.You have to pay to clean, repair or replace it yourself. However, you can't claim if your employer washes your kit, provides facilities to do so (even if you don't use them) or pays you for doing this maintenance.
You paid income tax in the year you are claiming for.
How much? The amount you're able to claim tax relief on depends totally on your industry. The standard allowance for spending on uniform maintenance is £60 (for 2011/12) – so basic rate taxpayers would be able to claim £12 back (20% of £60) and higher rate payers £24 (40% of £60). The £60 is a flat rate, so you don't need to record and report all the individual amounts you spend.
Most people can claim for the past six years, if you've been wearing the uniform all that time – though before April 2008 the flat rate was £45 per year. A basic rate taxpayer, claiming the max. possible for the last six years (and this one), could reclaim £75 in total.
Some occupations have more specific limits, often to do with specialist uniforms, with the maximum allowance of £140. A higher rate taxpayer would get back £56 tax on that. Check to see if your profession is listed.
The only way you can get more than the standard payment is to prove that your annual uniform laundry bill is higher. Speak to the tax office if you want to do this as it's a little more complicated.
How do I do it? If this is your first time claiming a tax allowance or the amount you paid out was more than £1,000, then you'll need to claim the money back by post.
By letter: Send a letter to the tax office on your payslip/P60, or to the generic address HM Revenue & Customs, Pay As You Earn, PO Box 1970, Liverpool, L75 1WX. Write 'Repayment Claim' on the envelope to speed things up.
The letter should include and mention the following (where applicable):
Employer's name and address and dates of employment for the past six yearsYour occupation, job title and industry sector
Details of any laundry or cleaning services provided by your employer, if any
Details of payment or vouchers provided by your employer to cover laundry or other costs, if any
Why your uniform can't be worn outside of work (eg, it includes the company logo)
Whether you want the rebate to be deducted from the current year's or you would like a cheque
Laundry costs are tax deductable, so it's worth asking your accountant about it
